PCI: Drop of_match_ptr() to avoid unused variables

We have stubs for most OF interfaces even when CONFIG_OF is not set, so we
allow building of most controller drivers in that case for compile testing.

When CONFIG_OF is not set, "of_match_ptr(<match_table>)" compiles to NULL,
which leaves <match_table> unused, resulting in errors like this:

  $ make W=1
  drivers/pci/controller/pci-xgene.c:636:34: error: ‘xgene_pcie_match_table’ defined but not used [-Werror=unused-const-variable=]

Drop of_match_ptr() to avoid the unused variable warning.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/controller/dwc/pci-keystone.c

@@ -1324,7 +1324,7 @@ static struct platform_driver ks_pcie_driver __refdata = {
 	.remove = __exit_p(ks_pcie_remove),
 	.driver = {
 		.name	= "keystone-pcie",
-		.of_match_table = of_match_ptr(ks_pcie_of_match),
+		.of_match_table = ks_pcie_of_match,
 	},
 };
 builtin_platform_driver(ks_pcie_driver);

drivers/pci/controller/dwc/pcie-armada8k.c

@@ -343,7 +343,7 @@ static struct platform_driver armada8k_pcie_driver = {
 	.probe		= armada8k_pcie_probe,
 	.driver = {
 		.name	= "armada8k-pcie",
-		.of_match_table = of_match_ptr(armada8k_pcie_of_match),
+		.of_match_table = armada8k_pcie_of_match,
 		.suppress_bind_attrs = true,
 	},
 };

drivers/pci/controller/dwc/pcie-spear13xx.c

@@ -258,7 +258,7 @@ static struct platform_driver spear13xx_pcie_driver = {
 	.probe		= spear13xx_pcie_probe,
 	.driver = {
 		.name	= "spear-pcie",
-		.of_match_table = of_match_ptr(spear13xx_pcie_of_match),
+		.of_match_table = spear13xx_pcie_of_match,
 		.suppress_bind_attrs = true,
 	},
 };

drivers/pci/controller/pci-xgene.c

@@ -641,7 +641,7 @@ static const struct of_device_id xgene_pcie_match_table[] = {
 static struct platform_driver xgene_pcie_driver = {
 	.driver = {
 		.name = "xgene-pcie",
-		.of_match_table = of_match_ptr(xgene_pcie_match_table),
+		.of_match_table = xgene_pcie_match_table,
 		.suppress_bind_attrs = true,
 	},
 	.probe = xgene_pcie_probe,